package com.songlanyun.common.utils;

import java.util.Random;

/**
 * Created by gli on 2019/3/25.
 */
public class RandomNumberUtil {

    public static String random(int length){
        String random = "";
        for (int i=0;i<length;i++){
            Random r = new Random();
            random += r.nextInt(10);
        }

        return random;
    }
}
